uboot: (firmwareOdroidC2/C4) don't invoke patch tool, use patches = [] instead

https://github.com/NixOS/nixpkgs/blob/master/pkgs/stdenv/generic/setup.sh#L948
this can do it nicely.

Signed-off-by: Anton Arapov <anton@deadbeef.mx>

pkgs/development/libraries/nlohmann_json/default.nix

@@ -0,0 +1,47 @@
+{ stdenv
+, lib
+, fetchFromGitHub
+, cmake
+}:
+let
+  testData = fetchFromGitHub {
+    owner = "nlohmann";
+    repo = "json_test_data";
+    rev = "v3.0.0";
+    sha256 = "O6p2PFB7c2KE9VqWvmTaFywbW1hSzAP5V42EuemX+ls=";
+  };
+in stdenv.mkDerivation rec {
+  pname = "nlohmann_json";
+  version = "3.10.5";
+
+  src = fetchFromGitHub {
+    owner = "nlohmann";
+    repo = "json";
+    rev = "v${version}";
+    sha256 = "DTsZrdB9GcaNkx7ZKxcgCA3A9ShM5icSF0xyGguJNbk=";
+  };
+
+  nativeBuildInputs = [ cmake ];
+
+  cmakeFlags = [
+    "-DBuildTests=${if doCheck then "ON" else "OFF"}"
+    "-DJSON_MultipleHeaders=ON"
+  ] ++ lib.optional doCheck "-DJSON_TestDataDirectory=${testData}";
+
+  doCheck = stdenv.hostPlatform == stdenv.buildPlatform;
+
+  # skip tests that require git or modify “installed files”
+  preCheck = ''
+    checkFlagsArray+=("ARGS=-LE 'not_reproducible|git_required'")
+  '';
+
+  postInstall = "rm -rf $out/lib64";
+
+  meta = with lib; {
+    description = "JSON for Modern C++";
+    homepage = "https://json.nlohmann.me";
+    changelog = "https://github.com/nlohmann/json/blob/develop/ChangeLog.md";
+    license = licenses.mit;
+    platforms = platforms.all;
+  };
+}